A system is described for the automatic
plotting of the electrochemical voltage-log current characteristics of gallium
arsenide samples. The plots are in a convenient form for analysis, which allows
the electron concentration, and minority carrier diffusion length, of n-type
samples to be estimated. The technique permits electrochemical stripping and
measurements to be performed in situ in the same electrolytic cell, so that
depth profiles of measured parameters may readily be obtained.
Source:IOPscience
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